Accession Number:

AD0274311

Title:

STRAIN MEASUREMENTS ON A PRESSURIZED SOLID PROPELLANT GRAIN

Descriptive Note:

Technical rept.

Corporate Author:

CALIFORNIA INST OF TECHNOLOGY PASADENA JET PROPULSION LAB

Personal Author(s):

Report Date:

1962-03-15

Pagination or Media Count:

14.0

Abstract:

Measurements of the principal strains existing on the end cross section of five different solid propellant grains were made for two loading conditions, using the photoelastic coating technique. Surface re-enforcing effects were minimized by the application of a low-modulus 500 psi birefringent resin as the coating medium. The principal stresses in the coating were separated by a graphical procedure. The results indicate that the coating technique gives a more realistic measurement of grain stress concentrations and surface strain magnitudes, and that stress measurements obtained from classical model theory are quite conservative.

Subject Categories:

  • Ammunition and Explosives
  • Solid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE